I downvoted at first, but the test logs were well written so I changed to neutral. The biggest problem with this SCP is how simple and straightforward it is. There's a lack of good hook to make it really intriguing.

Nothing really stands out for me in this one. The concept of "virtual reality that affects real life" is nothing new and there wasn't anything special done with it here. It seems that one of the points of the log was to get to the ultra-realism mode, which ended up being exactly what I expected it to be. Actually, almost all the scenarios were what I expected them to be. Combat training? That's gonna be, of course, a training course. IQ test? Some sort of intelligence measuring test. Zero-G? The dude is gonna float. The two that were a bit more interesting, that being entertainment and random, could have been explored more than they were.

The combination of random/hostile AI isn't used that well either, it just goes nuts and attacks the D-class. There were a few rather nice details that, if expanded upon, could have made the SCP more interesting. Such as when the researcher asked who made the thing.

The SCP itself isn't badly written, it's just bland and not fun to read. -1 from me

The only thing that redeemed it for me was the test logs. As an SCP, it was pretty predictable. Without the test logs, it didn't even seem threatening or terrible past 'unexplained technology.' I think, as augmentedspartan said, that the question of what makes it possible is the only thing that's really intriguing. And maybe add something past Ultra-Realism mode that IS unpredictable, if not replacing it.

The AI is interesting, but it's unclear what it's rules of sentients are. First it says what the D-Class can call it, then it acts like a busted machine, and it never seems to address the D-Class as though it recognizes him. Maybe it's just me, but the specifics get confusing.

I'll also agree with everyone else, though; The test log is fantastic.

I mean, I really loved the whole thing. The concept of suit with neural connections coupled with a mysterious super computer was Awesone. But when it came to the test logs it became confusing as to how one interacts with SCP-2209-1 and generally how it operates. When the subject get's into the Sphere and initiates the "Experience" does the sphere itself exhibit the zero gravity? Or spin, or move, or something? How does the Dr perceive these effects? I just feel like these things could be answered with some simple details so I'm ofcourse still gonna upvote.

It have a lot of potential and is well written, but still have some serious problems for me.

First, it lacks information on the main article. Several things that are on the logs should be transcribed to the SCP, where they belong. The AI and whatever the Foundation already knows about it, the description of the simulation, including the list of scenarios and known interactions of them, and so forth. Those make no secret or spoiler of the logs, the main skip could be better used.

Also, some things on the logs bother me, specially given the potential of this item. To begin with, it was plainly stupid for the research to begin test of the Ultra Realism with Combat. Considering who they are and what they are testing, even at IQ Challenge they should imagine that URM could be extremely dangerous, otherwise they would not be the Foundation, but just the ISO version of the UIU.

The AI goes rogue without much on "character development", and the research team makes a poor job at their intended goal of exploring it. The relationship between the D-Class and the AI could be better developed for the end to make sense, and the experiments on the scenarios could be worked to seem more professional than "lets try the next one and pray for all to go well". If you want a single D-Class to live through as much as possible of the ordeal, you should be better prepared.